Bobbin



(No Model.)

0. HARDY.

BOBBIN.

. N0. 385,667. Patented July 3, 1888.

[I [II III!!! II arniwr OFFICE.

CHARLES HARDY, OF NASHUA, NEXV HAMPSHIRE.

BOBBIN.

SPECIFICATION forming part of Letters Patentll'o. 385,667, dated July 3,1888.

Application filed January 28, 1888. Serial No. 262,256. (No model.)

To all whom it may concern:

Be itknown that 1, CHARLES HARDY, a citizen of the United States,residing at Nashua,

in the county of Hillsborough and State of New Hampshire, have inventednew and useful Improvements in Bobbins, of which the following is aspecification.

My invention relates to the manufacture of bobbins, and the purposethereof is to provide a simple and inexpensive construction, where bythe head and barrel may be united in such manner that exposure to wet,blows, or other extraneous force shall not remove the head or rupturethe joint between it and the barrel.

The invention consists in the several novel features of construction andnew combinations of parts, hereinafter fully set forth, and then definedin the claims.

In the accompanying drawings, Figure 1 is a View of a bobbin with theends in section, showing my-invention. Fig. 2 is a central transversesection of one of the bobbinheads with the barrel removed. Fig. 8 is acentral longitudinal section of one end of a bobbin, showing a slightmodification in construction. Fig. 4 is a perspective View, partlybroken away, showing the spreading-ring.

In the said drawings, the reference-numeral 1 designates the barrel ofan ordinary bobbin having ends or heads 2. These parts are madeseparately and afterward united to economize the material.

In the head 2 of the bobbin I form an annular recess or chamber, 3,surrounding the central neck, 4, of a size and diameter to just admitthe tubular end of the barrel 1. This chamber increases or expands indiameter outwardly as it extends toward the outer end of the head,forming an inner wall to said chamber, which is parallel with the axisof the bobbin, and an outer wall which forms a small angle therewith,the entire chamber resembling the frustum. of a hollow cone, as seen inFig. 2. In the bottom of said chamber I form an annular wedge, 55,integral with the head 2, and having its inner and outer surfacessubstantially parallel with the inner and outer surfaces of the chamber3, the edge of the wedge being somewhat below the entrance to the saidchamber.

In uniting the parts a kerf or split is formed in the end of the barrel,and the parts being covered with glue or cement the end ofthe barrel isintroduced in the chamber 3 and driven to place, the wedge entering thekerf or split and spreading the barrel until it entirely fills thechamber, as seen in Fig. 1.

I may form the wedge 5 separately, as shown in Fig. 3, and introduce itwithin the charm her 8 before the end of the barrel is driven in. Inthis form of construction I may make the wedge or spreading annulus ofeither wood or metal.

This invention provides a simple, cheap, and exceedinglystrongconstruction, whereby the term of service of the bobbin is materiallyprolonged.

It will be seen that by my invention the barrel and head are united bycement upon both the internal and external surfaces of the former.Moreover, by splitting the tenon and inserting the annular wedge, thechamber in the head is filled by the tenon only, and not by the tenonand wedge lying against opposite faces of the annular chamber. Themortise also does not extend through the head, and

thereby a finished and smooth outer surface is provided on each head,whereby also the wedge is prevented from working out.

The expansion or increased width of the annular chamber may be uponeither side of the same or upon both sides equally.

WVhat I claim is 1. A bobbin consisting of the heads and barrelseparately formed, and each of the former provided with aninwardly-expanding annular chamber extending partially through it, and awedge arranged upon and supported by the base of each chamber andentering the ends of the barrel between its inner and outer surfaces tospread and wedge the said ends in the chambers of the heads,substantially as described.

2. A bobbin having in its head an annularrecess expanding outwardly orradially and provided with an annularwedgeintegral with the head, theconverging walls of said wedge being substantially parallel with theWalls of the recess, substantially as described.

3. The combination, with ahobbin-head having a recess, 3, concentricwith the neck 4, the width of said recessincreasing to ward the outerend of the head and provided with an annular 10 expansion correspondingwith that of the reeesses, and a barrel, the ends of which enter saidrecesses and are spread by said wedges, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES HARDY. Vilnesses:

R. '1. S ITH, O. L. LOVELAND.

